Color

#657d81

#657d81
hex#657d81
rgbrgb(101, 125, 129)
hslhsl(189, 12%, 45%)
oklchoklch(0.572 0.029 208.8)
Closest name: Blue Blood (#6b7f81)Relative luminance 0.1902

Colors that go with #657d81

Charcoal, Champagne and Cobalt Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #657d81

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#816965

#658177 · #656f81

#81657c · #7c8165

Split-complementary

Open in tool →

#81656f · #817765

#776581 · #816965 · #6f8165

Contrast

#657d81 as textRatioAAAA largeAAAFix
Aaon white
4.37:1failpassfail
  • AA: use #637a7e as the text (4.55:1)
  • AAA: use #4a5b5e as the text (7.12:1)
  • AA: or shift the background to #0a0a0a (4.53:1)
Aaon black
4.8:1passpassfail
  • AAA: use #849b9f as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #657d81 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #657d81
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #657d81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/657d81-a2b7be-df4e7e-1f252d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md